JLG 0300203771 - User Manual

Other manuals for JLG 0300203771

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Ronald HoltAug 12, 2025
Why is my JLG Lifting Systems operating hot?
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  Randall BellAug 12, 2025
  If your JLG Lifting System is operating hot, it could be due to several reasons. First, check the hydraulic fluid level and fill the reservoir to the proper level, as an insufficient amount of fluid won't meet the system's cooling demands. Another cause might be a failing or obstructed heat exchanger; make sure it's receiving adequate airflow and is in good operating condition—repair or replace it if necessary. Lastly, a system relief valve that's unseated for too long or has failed can cause overheating. In this case, repair or replace any malfunctioning relief valves and verify the machine loads aren't excessive.
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mark81Aug 22, 2025
What to do if JLG Lifting Systems won’t shift or is slow to start?
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  Steven QuinnAug 22, 2025
  If your JLG Lifting Systems won’t shift or is slow to start, it could be due to obstructed or restricted flow through the servo control signal lines. Make sure these signal lines aren't obstructed or restricted and that the signal pressure is adequate to shift the motor. Also, check the control orifices installed in the motor, as they determine the motor shift rate. Ensure the proper orifices are installed and not obstructed; clean or replace them as needed.
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Brenda HendersonDec 1, 2025
How to fix excessive noise and vibration in JLG 0300203771?